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Implement fopen() for Google Docs storage backend

This commit is contained in:
Michael Gapczynski 2012-03-24 14:49:44 -04:00
parent 826cb2c650
commit 26fcb35a89
1 changed files with 96 additions and 26 deletions
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122
lib/filestorage/google.php
View File

@ -40,7 +40,7 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
$this->entries = array();
}
private function sendRequest($feedUri, $http_method, $postData = null) {
private function sendRequest($feedUri, $http_method, $isDownload = false, $postData = null) {
$feedUri = trim($feedUri);
// create an associative array from each key/value url query param pair.
$params = array();
@ -54,30 +54,71 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
$tempStr .= '&' . urlencode($key) . '=' . urlencode($value);
}
$feedUri = preg_replace('/&/', '?', $tempStr, 1);
$req = OAuthRequest::from_consumer_and_token($this->consumer, $this->oauth_token, $http_method, $feedUri, $params);
$req->sign_request($this->sig_method, $this->consumer, $this->oauth_token);
$auth_header = $req->to_header();
$result = send_signed_request($http_method, $feedUri, array($auth_header, 'Content-Type: application/atom+xml', 'GData-Version: 3.0'), $postData);
// TODO Return false if error is received
if (!$result) {
return false;
$request = OAuthRequest::from_consumer_and_token($this->consumer, $this->oauth_token, $http_method, $feedUri, $params);
$request->sign_request($this->sig_method, $this->consumer, $this->oauth_token);
$auth_header = $request->to_header();
$headers = array($auth_header, 'Content-Type: application/atom+xml', 'GData-Version: 3.0');
$curl = curl_init($feedUri);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_FAILONERROR, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
switch ($http_method) {
case 'GET':
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
break;
case 'POST':
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $postData);
break;
case 'PUT':
$headers[] = 'If-Match: *';
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $http_method);
curl_setopt($curl, CURLOPT_POSTFIELDS, $postData);
break;
case 'DELETE':
$headers[] = 'If-Match: *';
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $http_method);
break;
default:
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
}
$result = explode('<', $result, 2);
$result = isset($result[1]) ? '<'.$result[1] : $result[0];
if ($isDownload) {
$tmpFile = OC_Helper::tmpFile();
$fp = fopen($tmpFile, 'w');
curl_setopt($curl, CURLOPT_FILE, $fp);
curl_exec($curl);
curl_close($curl);
return $tmpFile;
}
$result = curl_exec($curl);
curl_close($curl);
$dom = new DOMDocument();
$dom->loadXML($result);
return $dom;
}
private function getResource($path) {
if (array_key_exists($path, $this->entries)) {
return $this->entries[$path];
$file = basename($path);
if (array_key_exists($file, $this->entries)) {
return $this->entries[$file];
} else {
$title = basename($path);
$dom = $this->sendRequest('https://docs.google.com/feeds/default/private/full?showfolders=true&title='.$title, 'GET');
// Strip the file extension; file could be a native Google Docs resource
if ($pos = strpos($file, '.')) {
$title = substr($file, 0, $pos);
$dom = $this->sendRequest('https://docs.google.com/feeds/default/private/full?showfolders=true&title='.$title, 'GET');
// Check if request was successful and entry exists
if ($dom && $entry = $dom->getElementsByTagName('entry')->item(0)) {
$this->entries[$file] = $entry;
return $entry;
}
}
$dom = $this->sendRequest('https://docs.google.com/feeds/default/private/full?showfolders=true&title='.$file, 'GET');
// Check if request was successful and entry exists
if ($dom && $entry = $dom->getElementsByTagName('entry')->item(0)) {
$this->entries[$path] = $entry;
$this->entries[$file] = $entry;
return $entry;
}
return false;
@ -86,7 +127,7 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
private function getExtension($entry) {
$mimetype = $this->getMimeType('', $entry);
switch($mimetype) {
switch ($mimetype) {
case 'httpd/unix-directory':
return '';
case 'application/vnd.oasis.opendocument.text':
@ -158,7 +199,10 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
$name = $entry->getElementsByTagName('title')->item(0)->nodeValue;
// Google Docs resources don't always include extensions in title
if (!strpos($name, '.')) {
$name .= '.'.$this->getExtension($entry);
$extension = $this->getExtension($entry);
if ($extension != '') {
$name .= '.'.$extension;
}
}
$files[] = $name;
// Cache entry for future use
@ -178,11 +222,15 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
} else if ($entry = $this->getResource($path)) {
// NOTE: Native resources don't have a file size
$stat['size'] = $entry->getElementsByTagNameNS('http://schemas.google.com/g/2005', 'quotaBytesUsed')->item(0)->nodeValue;
$stat['atime'] = strtotime($entry->getElementsByTagNameNS('http://schemas.google.com/g/2005', 'lastViewed')->item(0)->nodeValue);
// if (isset($atime = $entry->getElementsByTagNameNS('http://schemas.google.com/g/2005', 'lastViewed')->item(0)->nodeValue))
// $stat['atime'] = strtotime($entry->getElementsByTagNameNS('http://schemas.google.com/g/2005', 'lastViewed')->item(0)->nodeValue);
$stat['mtime'] = strtotime($entry->getElementsByTagName('updated')->item(0)->nodeValue);
$stat['ctime'] = strtotime($entry->getElementsByTagName('published')->item(0)->nodeValue);
}
return $stat;
if (isset($stat)) {
return $stat;
}
return false;
}
public function filetype($path) {
@ -278,14 +326,36 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
public function fopen($path, $mode) {
if ($entry = $this->getResource($path)) {
$extension = $this->getExtension($path);
$downloadUri = $entry->getElementsByTagName('content')->item(0)->getAttribute('src');
// TODO Non-native documents don't need these additional parameters
$downloadUri .= '&exportFormat='.$extension.'&format='.$extension;
switch ($mode) {
case 'r':
case 'rb':
$extension = $this->getExtension($entry);
$downloadUri = $entry->getElementsByTagName('content')->item(0)->getAttribute('src');
// TODO Non-native documents don't need these additional parameters
$downloadUri .= '&exportFormat='.$extension.'&format='.$extension;
$tmpFile = $this->sendRequest($downloadUri, 'GET', true);
return fopen($tmpFile, 'r');
case 'w':
case 'wb':
case 'a':
case 'ab':
case 'r+':
case 'w+':
case 'wb+':
case 'a+':
case 'x':
case 'x+':
case 'c':
case 'c+':
// TODO Edit documents
}
}
return false;
}
public function getMimeType($path, $entry = null) {
// Entry can be passed, because extension is required for opendir and the entry can't be cached without the extension
if ($entry == null) {
if ($path == '' || $path == '/') {
return 'httpd/unix-directory';
@ -297,7 +367,7 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
$mimetype = $entry->getElementsByTagName('content')->item(0)->getAttribute('type');
// Native Google Docs resources often default to text/html, but it may be more useful to default to a corresponding ODF mimetype
// Collections get reported as application/atom+xml, make sure it actually is a folder and fix the mimetype
if ($mimetype == 'text/html' || $mimetype == 'application/atom+xml') {
if ($mimetype == 'text/html' || $mimetype == 'application/atom+xml;type=feed') {
$categories = $entry->getElementsByTagName('category');
foreach ($categories as $category) {
if ($category->getAttribute('scheme') == 'http://schemas.google.com/g/2005#kind') {
@ -334,8 +404,8 @@ class OC_Filestorage_Google extends OC_Filestorage_Common {
return false;
}
public function search($query) {
public function touch($path, $mtime = null) {
}
}